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Business Summary
Filings
Ownership
Valuation
Ownership — ARGX
Institutional Holdings
Insider Transactions
US Institutional Ownership
45.6%
Institution
Shares
Value
Ownership %
Change
Filing Date
FMR LLC
5.23M
$4.85B
8.45%
+240.4K
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
2.68M
$2.48B
4.33%
-696.9K
2026-06-30
Jupiter Topco LLC
2.47M
$2.29B
4.00%
--
2026-06-30
Capital World Investors
2.20M
$2.04B
3.55%
-56.4K
2026-06-30
Artisan Partners Limited Partnership
1.51M
$1.40B
2.44%
+40.8K
2026-06-30
Avoro Capital Advisors LLC
1.00M
$927.0M
1.62%
--
2026-06-30
WELLINGTON MANAGEMENT GROUP LLP
930.5K
$863.0M
1.50%
-90.9K
2026-06-30
BlackRock, Inc.
777.2K
$721.0M
1.26%
-31.1K
2026-06-30
RTW INVESTMENTS, LP
709.4K
$658.0M
1.15%
--
2026-06-30
MORGAN STANLEY
643.1K
$596.0M
1.04%
+82.4K
2026-06-30
Invesco Ltd.
444.0K
$411.0M
0.72%
-150.7K
2026-06-30
BANK OF AMERICA CORP /DE/
400.2K
$371.0M
0.65%
+117
2026-06-30
ALLIANCEBERNSTEIN L.P.
395.7K
$288.0M
0.64%
-26.6K
2026-06-30
Bellevue Group AG
301.0K
$279.0M
0.49%
-12.0K
2026-06-30
SANDS CAPITAL MANAGEMENT, LLC
298.6K
$277.0M
0.48%
-41.7K
2026-06-30
CITADEL ADVISORS LLC
273.3K
$253.0M
0.44%
-16.9K
2026-06-30
BESSEMER GROUP INC
267.8K
$248.0M
0.43%
+203.5K
2026-06-30
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
264.6K
$245.0M
0.43%
-1.4K
2026-06-30
SEI INVESTMENTS CO
255.1K
$236.0M
0.41%
-31.9K
2026-06-30
Clearbridge Investments, LLC
253.8K
$235.0M
0.41%
+22.4K
2026-06-30
JENNISON ASSOCIATES LLC
226.2K
$209.0M
0.37%
-11.3K
2026-06-30
FRANKLIN RESOURCES INC
224.9K
$208.0M
0.36%
-8.6K
2026-06-30
Pictet Asset Management Holding SA
198.3K
$183.0M
0.32%
+50.0K
2026-06-30
TWO SIGMA INVESTMENTS, LP
186.2K
$172.0M
0.30%
--
2026-06-30
AMERIPRISE FINANCIAL INC
181.5K
$168.0M
0.29%
-34.4K
2026-06-30
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